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w84Kel

Permet de se déclencher à l'arrivée d'un élément sur une page.

当前为 2020-01-06 提交的版本，查看 最新版本。

此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.cn-greasyfork.org/scripts/394721/763605/w84Kel.js 

  1. // ==UserScript==
  2. // @name         w84Kel
  3. // @namespace    http://tampermonkey.net/
  4. // @version      0.1
  5. // @description  Permet de se déclencher à l'arrivée d'un élément sur une page.
  6. // @author       CoStiC
  7. // @include        *://*/*
  8. // @grant        none
  9. // ==/UserScript==
  10.  
  11. (function() {
  12.     'use strict';
  13.  
  14.     /*--- waitForKeyElements():  A utility function, for Greasemonkey scripts,
  15. that detects and handles AJAXed content. Forked for use without JQuery.
  16. Usage example:
  17.     waitForKeyElements (
  18.         "div.comments"
  19.         , commentCallbackFunction
  20.     );
  21.     //--- Page-specific function to do what we want when the node is found.
  22.     function commentCallbackFunction (element) {
  23.         element.text ("This comment changed by waitForKeyElements().");
  24.     }
  25. IMPORTANT: Without JQuery, this fork does not look into the content of
  26. iframes.
  27. */
  28.     function waitForKeyElements(
  29.     selectorTxt, /* Required: The selector string that specifies the desired element(s). */
  30.      actionFunction, /* Required: The code to run when elements are found. It is passed a jNode to the matched element. */
  31.      bWaitOnce /* Optional: If false, will continue to scan for new elements even after the first match is found. */
  32.     ) {
  33.         var targetNodes, btargetsFound;
  34.         targetNodes = document.querySelectorAll(selectorTxt);
  35.  
  36.         if (targetNodes && targetNodes.length > 0) {
  37.             btargetsFound = true;
  38.             /*--- Found target node(s).  Go through each and act if they are new.*/
  39.             targetNodes.forEach(function (element) {
  40.                 var alreadyFound = element.dataset.found == 'alreadyFound' ? 'alreadyFound' : false;
  41.  
  42.                 if (!alreadyFound) {
  43.                     //--- Call the payload function.
  44.                     var cancelFound = actionFunction(element);
  45.                     if (cancelFound) btargetsFound = false; else element.dataset.found = 'alreadyFound';
  46.                 }
  47.             });
  48.         } else {
  49.             btargetsFound = false;
  50.         }
  51.  
  52.         //--- Get the timer-control variable for this selector.
  53.         var controlObj = waitForKeyElements.controlObj || {};
  54.         var controlKey = selectorTxt.replace(/[^\w]/g, "_");
  55.         var timeControl = controlObj[controlKey];
  56.  
  57.         //--- Now set or clear the timer as appropriate.
  58.         if (btargetsFound && bWaitOnce && timeControl) {
  59.             //--- The only condition where we need to clear the timer.
  60.             clearInterval(timeControl);
  61.             delete controlObj[controlKey];
  62.         } else {
  63.             //--- Set a timer, if needed.
  64.             if (!timeControl) {
  65.                 timeControl = setInterval(function () {
  66.                     waitForKeyElements(selectorTxt,
  67.                                        actionFunction,
  68.                                        bWaitOnce
  69.                                       );
  70.                 },
  71.                                           300
  72.                                          );
  73.                 controlObj[controlKey] = timeControl;
  74.             }
  75.         }
  76.         waitForKeyElements.controlObj = controlObj;
  77.     }
  78.  
  79. })();